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Spatial Distribution of Optimal Plant Cover and Its Influencing Factors for Populus simonii Carr. on the Bashang Plateau, China

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  • Yu Zhang

    (School of Geographical Sciences, Hebei Normal University, Shijiazhuang 050024, China
    Hebei Key Laboratory of Environmental Change and Ecological Construction, Shijiazhuang 050024, China
    Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Shijiazhuang 050024, China)

  • Wei Li

    (School of Land Science and Space Planning, Hebei GEO University, Shijiazhuang 050031, China
    International Science and Technology Cooperation Base of Hebei Province: Hebei International Joint Research Center for Remote Sensing of Agricultural Drought Monitoring, Hebei GEO University, Shijiazhuang 050031, China)

  • Shaodan Li

    (School of Geographical Sciences, Hebei Normal University, Shijiazhuang 050024, China
    Hebei Key Laboratory of Environmental Change and Ecological Construction, Shijiazhuang 050024, China
    Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Shijiazhuang 050024, China)

  • Baoni Xie

    (School of Land Science and Space Planning, Hebei GEO University, Shijiazhuang 050031, China
    International Science and Technology Cooperation Base of Hebei Province: Hebei International Joint Research Center for Remote Sensing of Agricultural Drought Monitoring, Hebei GEO University, Shijiazhuang 050031, China)

  • Fangzhong Shi

    (School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China)

  • Jianxia Zhao

    (College of Geography and Land Engineering, Yuxi Normal University, Yuxi 653100, China)

Abstract

The Bashang Plateau is the core zone of the agro-pastoral ecotone in northern China and represents an ecological barrier for preventing the invasion of wind-blown sand in the Beijing–Tianjin–Hebei region. Increasing plant cover to control soil erosion is an effective measure to address land degradation; however, plant cover is different from climatic conditions. In this study, we determined the optimal spatial distribution of Populus simonii Carr., which is a widely planted species used for revegetation on the Bashang Plateau. A modified Biome-BGC model was used to simulate the dynamics of the net primary productivity (NPP), actual evapotranspiration (AET), and leaf-area index (LAI). The model was validated using field-observed tree-ring and MODIS AET and NPP data. The dynamics of AET, NPP and LAI for P. simonii at 122 representative sites in the study area for the period 1980–2019 were simulated by the validated model. The results showed that the spatial distributions of mean AET, NPP, and LAI generally decreased from southeast to northwest. The ranges of optimal plant cover in terms of maximum LAI for P. simonii were 3.3 in the Fengning–Weichang area, 1.9 in the Shangyi–Zhangbei–Guyuan area and 1.3 in the Kangbao area. Mean annual precipitation (MAP), elevation, soil texture and mean annual temperature were the main factors influencing the distribution of AET, NPP and LAI. As the MAP decreased, the correlations between AET, NPP, LAI and precipitation gradually decreased. In different subregions, the factors influencing optimal-plant-cover distribution varied significantly. These quantitative findings provide the optimal plant cover for the dominant tree in different subregions and provide useful information for land degradation management on the Bashang Plateau.

Suggested Citation

  • Yu Zhang & Wei Li & Shaodan Li & Baoni Xie & Fangzhong Shi & Jianxia Zhao, 2022. "Spatial Distribution of Optimal Plant Cover and Its Influencing Factors for Populus simonii Carr. on the Bashang Plateau, China," Land, MDPI, vol. 11(6), pages 1-15, June.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:6:p:890-:d:836629
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    References listed on IDEAS

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    1. Xia, Y.Q. & Shao, M.A., 2008. "Soil water carrying capacity for vegetation: A hydrologic and biogeochemical process model solution," Ecological Modelling, Elsevier, vol. 214(2), pages 112-124.
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    Cited by:

    1. Junyi Liu & Zhixiang Wu & Siqi Yang & Chuan Yang, 2022. "Sensitivity Analysis of Biome-BGC for Gross Primary Production of a Rubber Plantation Ecosystem: A Case Study of Hainan Island, China," IJERPH, MDPI, vol. 19(21), pages 1-13, October.

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